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N(0)=0.5 so the area between 1 and 0 is N(1)-N(0) =0.8413 -0.5 =0.3413 same area is between -1 and 0 so area between 1 and -1 is ---2x0.3413=0.6826 Therefore P(-1 <=z<= 1) + P(z>1.5) 0.6826 + 0.0668 = 0.7494